.header__link {
  text-decoration: none;
  color: rgba(255, 255, 255, 1);
  font-size: 18px;
  line-height: 22px;
  margin: 0;
  border: 0;
  background-color: inherit;
  text-align: center;
  align-self: center;
  padding: 0;
  margin: 0;
  transition: opacity .5s ease;
}

.header__link :hover {
  opacity: 0.6;
}

@media screen and (max-width: 640px) {
  .header__link {
    margin-bottom: 20px;
  }

  .header__link:nth-child(1) {
    margin-top: 30px;
  }
}